uvijayreddy657 [http://community.jboss.org/people/uvijayreddy657] created the discussion "Bug : Getting NullPointerException when getting the ProcessInstance p = ksession.getProcessInstance(id)" To view the discussion, visit: http://community.jboss.org/message/629203#629203 -------------------------------------------------------------- Below is the stacktrace: java.lang.NullPointerException at org.jbpm.process.instance.impl.ProcessInstanceImpl.setProcess(ProcessInstanceImpl.java:61) at org.jbpm.marshalling.impl.AbstractProcessInstanceMarshaller.readProcessInstance(AbstractProcessInstanceMarshaller.java:380) at org.jbpm.persistence.processinstance.ProcessInstanceInfo.getProcessInstance(ProcessInstanceInfo.java:133) at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:64) at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:190) at org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1113) at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:283) at org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:48) at org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:25) at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:292) at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.getProcessInstance(CommandBasedStatefulKnowledgeSession.java:124) at com.emirates.sds.workflow.bpmn.engine.CWFEngine.getProcessInstance(CWFEngine.java:225) at com.emirates.sds.workflow.mbean.CWorkflowDesignerMBean.getAssignedTasks(CWorkflowDesignerMBean.java:739) at com.emirates.sds.workflow.mbean.CWorkflowDesignerMBean.getTasks(CWorkflowDesignerMBean.java:1217) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at javax.el.BeanELResolver.getValue(BeanELResolver.java:62) at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54) at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:71) at org.apache.el.parser.AstValue.getValue(AstValue.java:118) at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:178) at javax.faces.component.UIData.getValue(UIData.java:554) at org.ajax4jsf.component.UIDataAdaptorBase.getValue(UIDataAdaptorBase.java:1647) at org.ajax4jsf.component.SequenceDataAdaptor.getDataModel(SequenceDataAdaptor.java:65) at org.richfaces.component.UIExtendedDataTable.resetDataModel(UIExtendedDataTable.java:390) at org.ajax4jsf.component.UIDataAdaptorBase.beforeRenderResponse(UIDataAdaptorBase.java:1656) at org.richfaces.component.UIExtendedDataTable.beforeRenderResponse(UIExtendedDataTable.java:417) at org.ajax4jsf.component.RenderPhaseUIDataAdaptorVisitor.beforeComponent(RenderPhaseUIDataAdaptorVisitor.java:44) at org.richfaces.event.RenderPhaseComponentListener.processComponents(RenderPhaseComponentListener.java:47) at org.richfaces.event.RenderPhaseComponentListener.processComponents(RenderPhaseComponentListener.java:55) at org.richfaces.event.RenderPhaseComponentListener.processComponents(RenderPhaseComponentListener.java:55) at org.richfaces.event.RenderPhaseComponentListener.processComponents(RenderPhaseComponentListener.java:55) at org.richfaces.event.RenderPhaseComponentListener.beforePhase(RenderPhaseComponentListener.java:71) at org.ajax4jsf.component.AjaxViewRoot.processPhaseListeners(AjaxViewRoot.java:188) at org.ajax4jsf.component.AjaxViewRoot.encodeBegin(AjaxViewRoot.java:510) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1641) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:117) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:309) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:349) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629203#629203] Start a new discussion in jBPM Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]